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GCSE Physics units and standard form

Convert metric prefixes, grams and squared or cubed units; write numbers in standard form.

Practise

Standard form

Write 0.0061 in standard form.

Standard form: a × 10ⁿ, with 1 ≤ a < 10.

Hint

Write a × 10^n with 1 ≤ a < 10. Moving the decimal point changes n.

Worked solution
  1. 0.0061 = 6.1 × 10-3.
  2. The coefficient lies between 1 (inclusive) and 10 (exclusive).
Another question
Question type: Mixed practice
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Foundation and Higher: this set covers content common to both tiers. Some calculations need several steps.

Units and powers

This set uses nano, micro, milli, centi, kilo and mega. A prefix on a squared or cubed length applies to every length factor: 1 cm³ = (0.01 m)³. The SI base unit for mass is kg. Standard form has a coefficient from 1 inclusive to 10 exclusive.

GCSE scope

AQA 8463: MS 1a–b, 3c, 5c; 4.2.1.3; OCR Gateway J249: 5e Units; 5g M1a–b, M3c, M5c; P3.2. Tasks cover the selected skills listed above.

AQA specification · OCR Gateway specification

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